- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/357 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel
Patent holdings for IPC class A61K 31/357
Total number of patents in this class: 1890
10-year publication summary
|
137
|
124
|
166
|
162
|
147
|
133
|
129
|
115
|
136
|
63
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eisai R&D Management Co., Ltd. | 1166 |
44 |
| The Regents of the University of California | 20690 |
38 |
| Tasly Pharmaceutical Group Co., Ltd. | 121 |
23 |
| The Johns Hopkins University | 5874 |
21 |
| The Brigham and Women's Hospital, Inc. | 2284 |
17 |
| Tapestry Pharmaceuticals, Inc. | 22 |
15 |
| Massachusetts Institute of Technology | 10230 |
14 |
| Board of Regents of the University of Nebraska | 794 |
12 |
| Cedars-Sinai Medical Center | 1195 |
12 |
| Infirst Healthcare Limited | 60 |
12 |
| Pfizer Inc. | 3384 |
11 |
| President and Fellows of Harvard College | 6078 |
11 |
| Korea Research Institute of Bioscience and Biotechnology | 1064 |
11 |
| Nutramax Laboratories, Inc. | 252 |
11 |
| Janssen Pharmaceutica N.V. | 3177 |
10 |
| The Scripps Research Institute | 1344 |
10 |
| Symrise AG | 1834 |
10 |
| Vivakor, Inc | 91 |
10 |
| Cheers Health, Inc. | 24 |
10 |
| Vivus LLC | 84 |
10 |
| Other owners | 1578 |